mirror — Reflects the signal that exceeds the low and high thresholds.
xsig -- input signal
klow -- low threshold
khigh -- high threshold
mirror “reflects” the signal that exceeds the low and high thresholds.
This opcode is useful in several situations, such as table indexing or for clipping and modeling a-rate, i-rate or k-rate signals.
Here is an example of the mirror opcode. It uses the file mirror.csd.
Example 516. Example of the mirror opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac ;;;realtime audio out ;-iadc ;;;uncomment -iadc if realtime audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o mirror.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 0dbfs = 1 nchnls = 2 instr 1 ; Limit / Mirror / Wrap igain = p4 ;gain ilevl1 = p5 ; + level ilevl2 = p6 ; - level imode = p7 ;1 = limit, 2 = mirror, 3 = wrap ain soundin "fox.wav" ain = ain*igain if imode = 1 goto limit if imode = 2 goto mirror asig wrap ain, ilevl2, ilevl1 goto outsignal limit: asig limit ain, ilevl2, ilevl1 goto outsignal mirror: asig mirror ain, ilevl2, ilevl1 outsignal: outs asig*.5, asig*.5 ;mind your speakers endin </CsInstruments> <CsScore> ; Gain +Levl -Levl Mode i1 0 3 4.00 .25 -1.00 1 ;limit i1 4 3 4.00 .25 -1.00 2 ;mirror i1 8 3 4.00 .25 -1.00 3 ;wrap e </CsScore> </CsoundSynthesizer>